Typewriting machine



TYPEWRITING MACHINE Original Filed April 25, 1938 2 Sheets-Sheet l g Q ah VM4M/ w Q ATTORNEYS Oct. 14, 1941. J K|TTE| 2,258,769

TYPEWRIITING MACHINE Original Filed April 25, 1938 2 Sheets-Sheet 2-.24, rut/8'5. 4'\

INVENTOR John JTKl'ffel,

gwym' ATTORNEYS Patented Oct. 14, 1941 TYPEWRITIN G -MACHI NE JohnJosepnKittel St. Albans ,N: Y., assignorto Royal Typewriten- Gompany,Inc., NewYork, N; Y., a conpprati nnflgewXorkr Original'applicatiomApril 25, 1938, Serial No;- 204,235. Diwided -tandthis:applicationflctober 19; 1939, SerialaNo:.'3.00,278si' canine-Q (or.191-151) This application-is a division of myzcoz-pendingi b'lthekeyaleveraor the =spacetgbar; andiacreturn application Serial No.2.04g235 for improvements. movementifromeleftitoiright. Suchtan escapeinTypewriting machines, filed April? 1938i. mentimechanis'mz ishshown;foreexampleginzthe:

The invention relates-to typewritingmachines; Patent Numben 1,212,939;issuedr Januaryi 16; and more particularly to ribbon feeding. meehe:1917,.ito GeorgesE; Handley anism for typewriting" machines; Mechanism'Dhe carriage: includes-the usuali endsplatesgl embodying thepresent'i'nventionis, howevenees and": 2 in. which is journa-led platen3;. and; pecially adapted for the feeding of" ribbons: or:alsomountedfonzthevcarriagesaretheeusual paper; strips of hecto graph orother kinds-of transfers apron. and: bottom;- feed-3 IOllfilSi (not:shown): for; medium in the use of Which it is-desirable to; m. feeding amaster sheet Gbforwardlygandthences present a complete new-orunused'portionof theupward yiin. front of:the:p laten.e Mountl d-ionlthetransfer medium, at the'printing line, for each: carriaaerisazbail-dincluding a-rearcrossbanfi new character typed in a line of typing. and:spaced: supporting; arms Ber- 55 connected 1' at" An object of theinvention is to -providea their forwardends byrahbar:Thavingjournaled;ribbon feeding mechanism operable iii-response151thereompressure;rollers fleikforrdirecting usual': to' actuation of aline-spacing lever-in amanner work, sheetsa (when such ar 1 sed):rearward yi to-feeda strip of fresh unused ribbon albngtheoverstheyplaten;after theyshave p ssed above-the printing line ofthe'platen' corresponding subprinting 11118;, Thearms.66i extend fromthe stantially in length to the length of an average Cmssibar 1rearwardly over? the: platen and-:are. typed line. 20- pivatally;connectedias at. 9-9tb. the upper ends" Other objects will becomeapparent from a & "1 f w h; in turn, are pivotallyr reading of thefollowing description, theappended mountediasaat H. on thecarriageiendipla i i claims, and the accompanyingdrawings; in (seeFigure; 3):; Springs; I-2-interposedghetween, which: 7 the; arms: Biand:thelzcarriage A end'platesyurge the; Figure 1 i a top l '-v ie f atypewriting fifi arms: downwardly: S0: as yieldably to; hold; the;machine with some-parts omitted and showing pressu e rollers 8sagaenst-usualzworki h fiifind mechanism embodying my invention applied htter a ainst'zthesplatem Eormeciainteer lyt thereto;

Figure 2' r fragmentary tOp-p1 an1 e f les'on, whichiaxcombined line;spacinggandicarribbon feeding mechanism shown at the-1efthandriagemeturn; lever. I4: is pivotally; mounted: as: at; end 0f thetypewriter carriage Figure 15 and; l51ancl'iisi connectedz tortheplaten. 3: in; the usual drawn on an enlarged scale mannen by: means ofa link; Iii connected: toa.

Figure 3 is a view insideor-end elevation as; rock arm e. latter; a ygapawl: lib-en viewed when looking in the direction of the; gageableiwitlr.avratchet:wheel, lQJZQIlathE platen arro 3 i Figure 1, ddrawnonanenl'argedf (seeflFigure 2). Thelever I 4 includesthe usual: 7 ahandle. portionz which extends forwardly. so as;

scale;

Figure; 1 a,- se ti l vie -t k th qi to be positionedwithineasy reachoff thezopere 4' 4 of Figure 2; ator.. Ribbonspools20-e2fl1arezshownmounted witlithejendplateJ is.;a;latera11yeextendingshelfr Figure 5 isan inverted section takenthe 011113116 main: frame in. the usual manner;a re:-

line 55 of Figure'4 and drawn on; areduced 4-9; V r i le': inking.ribbon. 21! beingadapted: to be scale with respect to Figure-4;andunwound'lfrom: one off the spools 2'0; andii wounds Figure 6 is afragmentary'end elevationlook p other; as S' y-- ing in the directionof'the'a-rrow-6 in Figure l;

The drawings showone embodiment of the scribediismotlclaimed' per seasconstituting-the i ti as applied t a Royalistandard*type--ip1BSBniZinvention,- itbeing'understood;thatthe writing machine, but itisto-be'understood that;- invention comprises partszto behereinafterde-e mechanism embodying th i e ti scribed: and combinations of suchparts with. applied to other typewriting-machinesi- The machineshowninthe 1 drawings include's chine construction; a eady des ibed.

The typewriting: machine as; thuss far; dee;

eachmthen and-with the known: typewriting ma.-

a-stationary main frame and a carriagegen 5Q Although: the invention isnot necessarily re, 7

erallydesignated B mounted-on the-main-fram stricted; to the use ofribbon; feed) mechanism, for reciprocatory movements in the usualmanadapted m mounted 0 01 pp d to; yp

ner, viz an intermittent or step-by-step move-- writing; machinesz of.standard. on known con-Q ment from right to left which is effected bwastruction ituis desirable n any: cases toapply motor-and anescapement-mechanism actuated thei feedimechanisml to suchzmachines, andfor end of the carriage, and the hectograph or other transfer mediumribbon 22 is arranged tobe fed from the roll along the printingline ofthe platen in a manner to be described. In order to protect the mastersheet andto prevent it from being marred by the ribbon 22,-a'pair ofspaced' guards 23 is adjustably mounted on the bail 34. The spring 35tends to move the line spacing lever 4 in a clockwise direction asviewed in Figures 1 and 2. A stop 38, which extends upwardly from theplate 34, is engageable by the line spacing lever M for limiting themovement thereof under the urge of the spring 35.

Cooperating with the shelf l3 for mounting the feeding mechanism is anextension bracket forming a lower shelf 39 secured to the carriage endplate I as at 40-40. A shaft 4| extends through an aperture 42 in theshelf |3 and through an aperture 43 in the lower shelf 39. The shaft isformed adjacent its upper end portion with an enlargement 44, andimmediately bar 1, being held in adjusted position on thebar by means ofscrews 24, as-more fully explained 3 in the copending application ofGeorge F. Hand'- ley, Serial Number 170,451. 1 The ribbon supply means Dincludes a mount ing bracket comprising. a vertically disposed plate 25supported on the carriage end plate 2 by means of arms 26-26, and aribbon-carrying spool 21 journaled on a stud 28 fixed to the bracketplate 25. A. nut 29. has" threaded.en-' gagement with the stud 28 and isadapted ad justably to press the spool 21 against 'a. frictional washer38 for varying the resistance of the spool to rotation, and hence forvarying the tension of the ribbon22.

In the form shown, the spool 21 is mounted in a vertical plane so as toreduce the over-all length of the carriage, and, in order to positionthe ribbon 22 properly along the printing line of the platen, it must betwisted partially. To this end there is provided a twisting and guidingmeans comprising a roller 3| rotatable about a horizontal axis and aguide member 32 which ispositioned in a vertical plane but which isinclined at an angle of substantially forty-five degrees to thehorizontal. The ribbon 22 is led from the spool 21 underneath the roller3| and. thence over the guide member 32, and after leaving the guidemember 32 the'ribbon passes between fin-. gers 33 which maintain theribbon properly positioned along the printing line of the platen.

The treated surface of theribbon 22 is disposed upwardly as it passesunder. the guide member 3|. transfer medium off the ribbon, the guidemember 3| preferably is mounted for free: rotation, and thereby anyharmful rubbing of the treated surface of the ribbon is avoided.

The feeding means generallydesignatedE is mounted at the end of thecarriageoppositelthat at which the ribbon supply means .is' supported.Some of the parts of the feeding means are.

plate 34 is, in the present construction; sup-l ported on top ofthe'shelf |3.' This, arrangement facilitates mounting of the ribbonfeeding parts compactly under the shelf |3.1 A spring 35.

Hence, in order to prevent rubbing of the Accordingly a combinedcarriage returnis connected at one end to the line spacing lever as at35, and is connected at' its other end :to

a. downwardly projecting part 31 of. the :plate above this enlargementwith another. and smaller enlargement which abuts against the bottomface of. the shelf I3. A spacing sleeve 46 having an'ecc'entric portion46 is mounted on the shaft 4| above the plate I3, and is adapted to beclamped against the plate by means of a nut 41 on the extreme upper end.of the shaft 4|.w The sleeve 45 may; beirotated about the shaft 4| tocause the eccentric portion 46 to cooperate as a stop with the linespacing lever 14 at selected different positions in order to adjust theextent.

of movement .of the line spacing lever required for proper cooperationwith the link IS, the rock arm l1, the pawl. l8, and the ratchet I9. Inorder to effect an adjustmentof the; eccentric portion 46, the nut '41is loosenedand-the sleeve 46 is turned, a fter which the nut is drawn upso as both tojlockthe eccentric 46 in adjusted position and at' thesame'time to an,- chor the shaft 4| securelyto the shelf'l3.

A toothed or'serratedfeediroll 48 is mounted,

for rotation on the shaft 4| belowtheshaft enlargement 44 and; mesheswith a feed roll49i which is journaled-on a headed pintle- 50 secured toan adjustable mount: or plate 5| carried by the .shelf l3 on the lowerside thereof. The ribbon 22 is trained between and gripped by the rolls48 and 49, and is fed by rotation-of the rolls in'a manner later-tobedescribed.

In order to facilitate placement of the ribbon between the rolls, theplate 5|, and hence-the pintle 50 and roller 49, are-mounted 'formovements towards and away-from'the fixedaxisroll 48. The plate 5| ismounted for both slid ing and pivotal movements with respect to the axisof the gear 48. As shown, the plate 5| is formed with an elongated slot'52 which receives the enlargement 45 of the shaft 4|; The enlargement 44of the shaft, however, overlaps the slot 52 so as to maintain the'innerend of the plate 5| against the lower side of the shelf |3. -The frontedge 53 of the shelf I3 is slotted as at 54 and receives for slidingmovements the outer end portion of the plate 5|, thereby maintaining theplate snugly against the bottomsurface of the shelf l3. Aspring 55 isconnected at one end to a stud 56 on the plate 34, and is connected atits other end to a-stud 51, the reduced-lower end of which has threadedconnection with the plate 5|. An eccentric 58 is held in place by thestud 51; and is positioned to engage the 'adja-' ing 'theribbon betweenthem. In order to-lock accep ed the plate in its retracted position; theplateisformed with a notch- 69 "adapted to; cooperate with a notched:edge 6 l on -an extension fl of -the carriage end*platel-.' 1 I Inoperation, the feed roll ltd-is: rotated? during line spacing movement:of: the: platem andi drives the i dlerfeed-r0114 9-=-with' whichittmesli'es; the two cooperating t'o feed the ribbon 22 along the-printing line l of the platen; T he means -fon eilecti'ng this rotarymovement of the rolll48f-constitutes' an important feature oftheinventiem l The feed 'rolls: 46 and 49 arearranged' 'to be operatedwhent-he carria ge retum lever l4lis -actuated to move the carriage'to=tlieright aftnthe typing of a line has been completed. 'I'hecarriageretu'rnlever l'4is formed 'with a rearwardly projecting arm or extension63, the extreme rear end of which is T-shaped, and serves to mount agear segment 64 which is secured as at 65 to the arm 63 of the carriagereturn lever, the pitch circle of the segment having its centercoincident with the axis of rocking of the lever 14. The segment 64 isarranged to mesh with a small pinion 66 mounted on a pintle 61 supportedby a bracket 68 secured to the shelf l3. A disc 69 is secured to thepinion 66 so as to rotate in unison therewith about the pintle 61. Adriving pawl 10 is pivotally mounted on the disc 69 as at 1 I, and isarranged to engage the teeth of a ratchet 12 which is brazed to a largegear wheel 13 rotatable about the pintle 61. The arrangement is suchthat, when the pinion 66 and disc 69 are rotated in a counterclockwisedirection as viewed in Figures 1 and 2, the gear 13 will be driven in thsame direction through the medium of the pawl 10 and the ratchet wheel12. The gear 13 is in constant mesh with the feed roll 48, so that thecounterclockwise movement of the gear 13 will drive the feed rolls 48and 49 in a direction to effect feeding of th ribbon or strip 22. Inorder to prevent rotation of the gear wheel T3 in the reverse direction,a check pawl 14 is pivotally mounted as at 15 on the shelf 39.

In operation, and assuming that the typing of a line has just beencompleted, the line spacing lever [4 will be actuated in the usualmanner to effect line spacing movement of the platen 3 and also toreturn the carriage to its right hand position preparatory to typing anew line. This will result in rocking of the line spacing lever in acounterclockwise direction about the pivot l5, whereby the pinion 96will be driven in a counterclockwise direction by the gear segment 64 soas to drive the feed rolls 48 and 49 through the medium of the disc 69,th pawl 10, the ratchet 12, and the gear wheel 13. The oscillatorysegment 64 and other gears are so proportioned as to provide speedmultiplying gearing between the line spacing lever and the feed roll 48,whereby operation of the line spacing lever effects a plurality ofrevolutions of the feed roll. The relative pitch diameters of the gearsegment 64, the pinion 66, the gear wheel 13, and the feed roll 48 aresuch that this operation will result in the feeding of a relatively longstrip of ribbon 22 corresponding substantially in length to the lengthof an average typed line so as to present a fresh portion of transfermedium ribbon along the line of typing before the start of each newline.

The typewriting machine disclosed herein embodies the invention in apreferred form, but it will be understood that various changes may bemade in the construction and relative arrangement'? or the parts withoutdeparting fror'r-r the ihventiomas defined in the eiaim i m0 :t y r In atypewriting machine; acarriagee' 'a' platen journale'el thereon" ferline spacing movement's; 'a' line-spacing lever pi votally mounted onthe carriage;;' a, ribbon feed roll 'journaled-on thecarriage;-- apiniomhavingdriving connection with said feed roll; and a -gear segmentmountedforoscillatory rotar y movement togetherwithsaid -lihe -spacingl'evervab'out the pivo't 'o'fisaid- 1ine-spaeirig*lever"and mesliing'with said pini'or-i In a typewriting m-achine, acarriage; aplaten:jpur-naled thereon for-"line spacing movements;- -.a combined linespacing; and carriage return Iever= pivotal mounted-- on the carnag aribbon feed roll journaled on the carriage; a pinion having drivingconnection with said feed roll; and a gear segment meshing with saidpinion and being connected to the lever for conjoint rotary movementtherewith about the pivot of said lever for imparting rotation to thefeed roll during line spacing and carriage return movement of the lever,the diameter of the gear segment being relatively large as compared tothe diameter of the pinion.

3. In a typewriting machine, a carriage; a carriage return leverpivotally mounted on the carriage and having a handle portion extendingforwar-dly of the lever pivot; a ribbon feed roll mounted on thecarriage; and speed multiplying gearing interposed between the feed rolland the carriage return lever for imparting a plurality of revolutionsto the feed roll in response to pivotal movement of the lever when thelatter is operated to effect return movement of the carriage, saidgearing including a pinion mounted to rotate on an axis behind thecarriag return lever pivot and having driving connection to said feedroll, a gear segment meshing with said pinion, and an arm secured tosaid carriage return lever and extending rearwardly of the pivot thereoffor mounting said segment to move together with said lever behind thelever pivot.

4. In a typewriting machine, a carriage; a carriage return leverpivotally mounted on the carriage and having a handle portion extendinforwardly of the lever pivot; a ribbon feed roll mounted on thecarriage; and speed multiplying gearing interposed between the feed rolland the carriage return lever for imparting a plurality of revolutionsto the feed roll in response to pivotal movement of the lever when thelatter is operated to effect return movement of the carriage, saidgearing including a pinion mounted to rotate on an axis behind thecarriage return lever pivot and having driving connection to said feedroll, a gear segment meshing with the pinion, an arm secured to saidcarriage return lever and extending rearwardly of the pivot thereof formounting said segment to move together with said lever behind the leverpivot, and a oneway drive connection between said pinion and said feedroll.

5. In a typewriting machine, a carriage; a carriage return leverpivotally mounted on the carriage to rock about a vertical axis andhavin a handle portion extending forwardly of the lever pivot; a ribbonfeed roll mounted on the carriage to rotate about a vertical axis; apinion mounted on the carriage to rotate about a vertical axis behindthe lever axis; driving connections between the pinion and the feedroll; a carriage return lever extension fast with the carriage returnlever and projecting rearwardly of the lever axis to rockwith-the leverabout its .vertical axis; and'a gear segment fast on the end of saidextension remote from and behind said carriage return lever axis andmeshing with said pinion, the pitch circle of said gear segment havingits center coincident with the carriage return lever axis of rocking.

6. In a typewriting machine including a carriage and a platen journaledthereon for linespacing movements, mechanism for feeding ribbon in suchrelation to typing operations as to position a fresh unused ribbonportion for typing impressions substantially at all times, saidmechanism comprising a combined line-spacing and carriage return levermounted on the carriage; a ribbon feed 'roll journaled on the carae syeoriage; means'fortraining ribbon along the writing line of the platen andto said feed roll; and speed multiplying gearing interposed between anddrivingly connecting the feed roll and the lever forrimparting aplurality of revolutions to theifeed rollvin response to a singlemovement of the lever when the ,latteruis operated to effectline-spacing movement of the platen and return movement of the carriage,the diameter of the feed roll, the length of the platen, and the ratioof said gearing being so related to each other that said operation ofsaid lever will etfect the feeding of a strip of ribbon correspondingsubstantlally in length to the length of an average typed line.

. JOHN JOSEPH KITTEL.

